Register for 4 more free articles.

Bryan Maneafaiga poses for a portrait in Richmond, Calif., Friday, Dec. 14, 2012. With uneven testing for steroids and inconsistent punishment, college football players are packing on significant weight _ in some cases, 30 pounds or more in a single year _ without drawing much attention from their schools or the NCAA in a sport that earns tens of billions of dollars for teams. But looking solely at the most significant weight gainers also ignores players like Maneafaiga. In the summer of 2004, Maneafaiga was an undersized 180-pound running back trying to make the University of Hawaii football team. Twice, once in pre-season and once in the fall, he failed school drug tests, showing up positive for marijuana use. What surprised him was that the same tests turned up negative for steroids. He'd started injecting stanozolol, a steroid, in the summer to help bulk up to a roster weight of 200 pounds. (AP Photo/Marcio Jose Sanchez) Photo by